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In 2012, a researcher at the University of Florida released a report saying that they deposited a layer of graphene doped with trifluoromethanesulfonyl-amide (TFSA) on a silicon wafer and used this silicon wafer to make a solar energy. Battery, the effective conversion rate of this solar cell can reach 8.6%. Now another team said they gave up using silicon instead of using a graphene-based material to make a solar cell. The solar cell measured an effective conversion rate of 15.6%, refreshing previous records.
Researchers from the Photovoltaic and Optoelectronic Device Group (DFO) formed by Universitat Jaume I and Oxford University in Spain have developed this photovoltaic device. They combined titanium dioxide and graphene as a charge collector. Then they used perovskite as a solar absorber. In addition to improving solar energy conversion, the team said the device was still manufactured at low temperatures. By embedding several layers of material, the research team can also use solution-based configuration techniques to handle it at temperatures below 150 degrees. This not only means lower potential production costs, but also means that this technology may also be used on flexible plastics.
The team’s research paper has been published in the journal Nano Letters.
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